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Hello. The part number you need for the control panel/switch assembly is 74011491. The actual oven control unit is 74011494. The following list shows some(but not all) of the error codes you might encounter. I hope this helps you!
1c1c shorted key
1c2c membrane keyboard disconnected
1c4c board to board communication failure...." "
1c6c EEprom hardware fault..........................." "
1c7c control not calibrated............................... replace main board
1c8c eeprom crc error--user options..............." "
1c81 eeprom crc error--cook profile................." "
4d21 no cooling fan rotation
4d31 cooling fan on when de-energized
4d41 cooling fan overspeed
4d51 door switch circuit fault
In the service manual, there was no "warming drawer" error code listed in the code chart.
Turn the oven off and wait three minutes before turning it on
again if "F -24" or "F-25" is displayed. These error codes mean the
keys on the control panel were pushed or touched for longer than 60
seconds. Leaning against the oven or hanging objects in front of the
controls can cause these error codes to appear.
Press the "Oven Off" key to clear the display and reset the
oven if an "F" followed by two numbers is shown on the display. Wait
three minutes, and turn the oven on. This type of error code indicates a
problem with the signal received by the electronic control board.
Write the error code down if an error code displays more than once. Thermador recommends calling a service technician if an error code reappears.
When the touchpad is not responding, it will need to be replaced. You can remove the panel to access the wires connecting the pad. You can test the power coming from the display to oven with test light, volmeter/ohmmeter to see if it responds. Chances are it is faulty. You can get parts and manual and more at repairclinic.com or partselect.com
Your power company has a free service whereby they will come to your home after a power failure and check things out for you. I would begin by calling them. It is possible that you have a problem in your electrical panel which is limiting the power to one side. Call them and let me know.
If the LED display is blank, then you have a power problem. first make sure there is power to the appliance. If you can determine this, then check the transformer on the control module. All these things require some familiarity with electronics and electricity. Depending on you is how to handle this.